Global breakthrough: The Chinese team leads the innovation of DC solar submersible pump heat dissipation technology, enabling green energy transformation

Geneva, October 15, 2023 - Under the dual background of global energy transition and climate change response, a breakthrough in DC solar submersible pump heat dissipation technology led by a Chinese research team has aroused high attention in the international energy and environmental protection field. Through innovative thermal management solutions, the technology significantly improves the operational stability and service life of Solar Water Pumps in extreme environments, providing efficient and sustainable solutions for agricultural irrigation in remote areas, seawater desalination and emergency disaster relief. The International Renewable Energy Agency (IRENA) has described it as a "key technological breakthrough for clean energy applications in developing countries".

Technological breakthrough: From "thermal bottleneck" to "dual-cycle heat dissipation Revolution"

Traditional solar submersible pumps have long been trapped in low heat dissipation efficiency in high temperature environments, and the aging speed of core components has accelerated, resulting in a reduction in equipment life of more than 40%. China Institute of Water Resources and Hydropower Research, together with the interdisciplinary team of the Department of Materials, Tsinghua University, successfully developed the first "photovoltaic heat pipe collaborative cooling system "**, and built the world's first dual cycle system of active heat dissipation and passive heat storage:

Space-grade technology for civilian use: three-dimensional pulsating heat pipe network, thermal conductivity up to 15 times that of traditional materials, combined with graphene phase change energy storage coating, the pump body operating temperature constant control below 50℃ (traditional solution is 85℃+)

Extreme working condition verification: The 55℃ high temperature measurement in the Sahara Desert shows that the continuous operation life of the equipment is extended from 3.2 years to 8.1 years, and the average annual failure rate drops from 18% to 6%

Material science innovation: Recycled aluminum alloy substrate fused with nano-ceramic coating to achieve 35% weight reduction of cooling components, while salt spray corrosion resistance increased by 500%

"We have deeply integrated spacecraft thermal control technology with materials science to create a stable operating environment that is not restricted by climate." "Even in plateau areas where the temperature difference between day and night exceeds 30 ° C, the system can still maintain an energy efficiency output of more than 92 percent," said Professor Li Wei, chief scientist of the project.

Global applications: The Green Revolution from Saharan farmlands to Southeast Asian islands

At present, the technology has been used in the field in 12 countries.

Mohammed Ali, the World Bank's Energy Director for Africa, said: "This technology will extend the application of distributed PV by 40 percent, bringing the cost of electricity to $0.08 /kWh in off-grid areas - a turning point for energy inclusion."

Industry impact: Reconstructing the economic model of Solar Water Pumps

According to the International Energy Agency, 780m people still lack reliable access to electricity, and 45 per cent of them rely on diesel generators for irrigation and drinking water. The breakthrough of DC solar submersible pump heat dissipation technology has reduced the life cycle cost of the equipment to 1/3 of the diesel solution. Dr. Klaus Rave, director of the Fraunhofer Institute for Solar Energy Research in Germany, commented: "When the heat dissipation efficiency and energy storage costs form a collaborative optimization, Solar Water Pumps are transforming from 'environmentally friendly alternatives' to' economic optimization. '"

Wang Liqun, secretary-general of the China Chamber of Commerce for Import and Export of Mechanical and Electrical Products, revealed that in the first half of 2023, China's exports of solar water pumps to the "Belt and Road" countries increased by 68% year-on-year, of which the proportion of products equipped with new cooling systems has reached 37%. This technology is reshaping the global competition for clean energy equipment."

Future outlook: From heat dissipation technology to energy iot ecosystem

The technical team has launched the "Smart Heat 2.0" plan to integrate 5G, AI and nano self-healing technology:

Digital twin operation and maintenance: Real-time monitoring of 3000 + cooling nodes through the cloud platform, failure prediction accuracy of 92%

Self-healing material: The new nano coating can automatically fill cracks of 0.1mm and extend the maintenance cycle to 10 years

Energy networking: In a pilot project in Rwanda, 300 connected water pumps create an "irrigation-energy-power-supply" triad

In particular, IRENA emphasizes that the modular design of the technology provides a standard interface for the construction of microgrids worldwide. In the next three years, it is expected that 5 million smart cooling pumps will be connected to off-grid energy networks, helping to achieve the United Nations SDG6 clean drinking water goals.

From the laboratory to the field, the breakthrough of DC solar submersible pump heat dissipation technology not only represents the rise of China in the global clean energy equipment manufacturing field, but also provides key technical support for achieving the United Nations Sustainable Development Goal (SDG6" clean drinking water and sanitation "). As the Executive Director of the United Nations Environment Programme, Anderson, put it: "When technological innovation meets climate justice, we are one step closer to a zero-carbon future."